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The following table describes the cluster components, configurations, and quantity.
Component | Configuration | Description | Quantity |
Physical servers | Dell PowerEdge R740 servers 2 x Intel Xeon Gold 6148 CPU @ 2.4Ghz 20 core 768 GB RAM | Hosts that house the various NodeManager and compute instances. | Minimum 3 master + 3 worker + 1 utility + 1 edge (8 nodes) |
NICs | 10 Gbps Ethernet NICs (minimum required) | Provide the data network services | At least one per server, although two NICs can be bonded for additional throughput. |
Internal disk drives | 2 SSD 480 GB (RAID) | These ensure continuous service on server resets. | Two per physical server configured as a RAID 1 volume (mirrored). |
Ethernet ToR or leaf switches | Minimum of 10 Gbps switches with sufficient port density to accommodate the compute cluster. These require enough ports to create a realistic spine-leaf topology providing ISL bandwidth above a 1:4 oversubscription ratio (preferably 1:1). | Although most enterprises have mature data network practices, consider building a dedicated data network for the Hadoop cluster. | At least two per rack. |
Ethernet spine switches | Minimum of 40 Gbps switches with sufficient port density to accommodate incoming ISL links and ensure required throughput over the spine (for intertraffic). | Same considerations as for ToR switches. | Depends on the number of racks. |